Hi,

There's a new warning in perl-5.38.0 in relation to locales that have the potential to crash perl. On Windows: 
> perl -MPOSIX="setlocale" -le "$loc = setlocale( LC_ALL, 'Korean_Kore
+a.949' ); print 'LOCALE: ' . $loc;"
Locale 'Korean_Korea.949' is unsupported, and may crash the interprete
+r.
LOCALE: Korean_Korea.949

[download]
Note that there's no accompanying info indicating which line of code triggered the error.
Is that a bug ? Is there some documentation that definitively answers that question ?
Are there any precedents of other warnings that also don't provide that information ?

The line number info is suppressed because the diagnostic message terminates with "\n".
The warning originates from locale.c, and removing the "\n" enables the line number info to be provided. Inline::C demo: 
### try.pl ###
use strict;
use warnings;

use Inline C => <<'EOC';

void foo() {
  Perl_ck_warner_d(aTHX_ packWARN(WARN_LOCALE),
                   "Locale is unsupported, and may crash the"
                   " interpreter.\n"
                  );
}

void bar() {
  Perl_ck_warner_d(aTHX_ packWARN(WARN_LOCALE),
                   "Locale is unsupported, and may crash the"
                   " interpreter"
                  );
}

EOC

foo();
bar();

__END__

Outputs:
Locale is unsupported, and may crash the interpreter.
Locale is unsupported, and may crash the interpreter at try.pl line 24
+.

[download]
I suppose I could just file an issue, and see what the response is.
But anyway, I'm interested to know how others here assess this issue.

Cheers,
Rob

In reply to Warning given, but no line number provided. by syphilis

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